Calculate the acceleration due to gravity on the moon which has a radius 1.740000 and its mass is 7.35x10^22kg

Answer 1

G M/R^2 = 6.67*10^-11 * 7.35*10^22 / (1.74*10^6)^2 (luckily I know the moon radius)
16.2 * 10^(22 -11 - 12) = 16.2 * 10^-1 = 1.62 m/s^2
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check
should be about 1/6 of earth g
9.81 / 6 = 1.63 Whew !